pontallie



2 Sheets-Sheet 2.

(No Model.)

L. J. P. PONTALLIE.

OSCILLATING PUMP.

Patented 00's. 16, 1888.

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UNTTED STATES PATENT OFFICE.

LEON JULES PIERRE PONTALLIE, OF ST. MALO, FRANCE.

OSCILLATING PUMP.

SPECIFICATION forming part of Letters Patent No. 391,189, dated October 16, 1888.

pp m filed June 20, 1887. Serial No. 241,909. No model.) latcnlcd in France November 20, 1886, No. 179,727.

To all whom it may concern:

Be it known that I, LEON JULES PIERRE PONTALLIE. a citizen of the French Republic, residing at St. Malo, in the French Republic, have invented certain new and useful Improvements in Oscillating Pumps, (for which I have obtained Letters Patent in France, dated November 20, 1886, No. 179,727,) and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to' make and use the same.

Referring to the drawings, Figures 1 and 2 are vertical axial sections of my improved pump, taken at right angles to each other; and Fig. 3 is a section on line a: of Fig. 1.

This invention relates to that class of suction and force pumps in which a liquid is made to perform the function of the usual piston or plunger, and more especially designed for use as vacuum or gascompressing pumps, although applicable for use as ordinary pumps.

The object of the invention is to produce a I pump that is simple in construction, effective in operation, and adapted to be operated either by hand or other motive power; and the invention consists in the construction of the pump, substantially as hereinafter described, and as set forth in the claims.

In my improved construction of pump the pump-body, or commonly called the pumpbarrel, consists of an annular hollow body or ring or wheel, WV, which I have shown as cylindrical in cross-section, though it may be of any other form in cross-section, and said wheel is connected by spokes s to a tubular axle or shaft, S, divided into two branches or passages, s 8 by a central partition, 8 Figs. 1 and 3. In the annular body W is interposed a valve-casing, 0, divided into two chambers, c c", by a central partition, 0 (arranged in the plane of the axis of the annular body,) and the valves, presently described. WVith the said chambers 0 0 connect, respectively, one end of two ducts, D D", whose other end is connected, respectively, with the branches or passages s s of the shaft S on opposite sides of the central partition, 8, of said shaft, as shown in Fig. 2.

On each side and end of the partition 0 are arranged two valves, V V and V V the v'alvcsV Vopcning outwardly, or toward the termini of the annular body on the side of the duct D, while the valves V V on the side of the duct D open inwardly, or toward said duct D", as shown in Fig. 3.

The shaft S is mounted in suitable bearings, which I have deemed unnecessary to show, as this feature of construction is well known and forms no part of thisinvention; and the apparatus is oscillated by hand or other motive power, the operation being as follows: The pump being primed by filling the annular body \V about half-full of water, as indicated in Fig. 1, said body being provided with a suitable filling-aperture, w, closed by a screw-plug, the pump is oscillated-as, for instance, from right to left. The liquid, moving toward the valves V V compresses the air in the body W above the level of the liquid and forces the same through valve V into duct D thence through passage 8 of shaft S. The movement of the liquid produces a partial vacuum in the body W on the side of the valves V V causing Valve V to open and allowing air to flow into the body W through passage 8 of shaft S and the duct D. An oscillation in a reverse direc tion of the body W will cause the liquid to flow toward the valves V V, the air drawn in being compressed, thereby causing the valve V to open, the compressed air flowing again into duct D and thence through passage 8 of shaft S, air being again drawn in through passage 8 of shaft S, duct D, and the valve V, the action being that of a double-acting forcepump.

It is obvious that if the duct D is connected with a suitable receiver the air drawn in through passage 8 of shaft S and duct D will be forced into said receiver and compressed therein; or, if the duct D is con nected with a vessel in which a vacuum is to be formed, the pump will perform the function of an exhauster and exhaust the air from such vessel, as will be readily understood.

As there are two sets of similar valves on each side of the valve-casing, either end of the shaft may be used for suction or exhaust or for forcing.

Of course it will be understood that the construction of the pump may be variously modified. For instance, the valves may be arranged in the ducts D D or in the passages c c of the tubularshaft, or a valve-casing may be arranged at the point ofjunction of the ducts D D with the passages of the shaft, said valvecasing then performing the function of a hub from which the spokes may radiate, the ducts D D serving as spokes themselves.

The apparatus may be constructed of any desired dimensions within certain limits.

Having now particularly described and ascertained the nature of this invention, what I claim is 1. In pumps in which a liquid is made to perform the function of the ordinary piston, an annular hollow pump body or barrel adapted to be oscillated on its axis, an admission-duct communicating with the interior of the punip-body, two admission-valves, one on each side of said admission-duct, between the same and the interior of the pump-body, an exhaust-duct, also communicating with the interior of the pump body, and two exhaustvalves, one on each side of said exhaust-duct, between the same and the interior of said pump-body, all substantially as and for the purpose specified.

2. In pumps in which a liquid is made to perform the function of the ordinary piston,

an annular hollow pump body or barrel adapted to be oscillated on its axis, asingle admission-duct communicating with theinterior of the pump-body, admission-valves arranged within the latter and opening in opposite directions from said admission-duct, a single exhaust-duct, also communicating with the interior of the pump-body, and exhaust-valves arranged within the latter and opening in opposite directions toward said exhaust-duct, all

arranged for cooperation, substantially as and for the purpose specified.

3. In pumps in which a liquid is made to perform the functions of the ordinary piston, an annular hollow [pump body or barrel adapted to be oscillated on its axis, a valvecasing interposed in said annular body, divided into two chambers, each provided with valved ports communicating with the termini of said annular body, the valves of one of the chambers opening inwardly and those of the other chamber opening outwardly, and an in- U dependent duct or passage for and in column nieation with said valve-chambers, substantially as and for the purpose specified.

4. In pumps in which a liquid is made to perform the-function of the ordinary piston, an annular hollow pump body or barrel, a tubular shaft with which said body is rigidly connected, said shaft being divided into two passages by a central partition, a valve-casing interposed in the annular body, divided into two chambers,each provided with valved ports in communication with the termini of said an nular body, the valves of one of the chambers opening inwardly and those of the other chamber outwardly, and an independent duct for each valve-chamber, connecting said chamber with the passages of the tubular shaft, substantially as described, for the purpose specified.

In testimony that I claim the foregoing I have hereunto set my hand this 3d day of May, 1887.

LEON JULES PIERRE PONTALLIE. Witnesses:

CAMILLE CHARROPPIN, J ULEs Pnnon. 

